NOTES ON NEOTROPICAL TABANIDAE VI 
A NEW SPECIES OF LEPISELAGA MACQ. 
WITH REMARKS ON RELATED GENERA 
By G. B. Fairchild 
Gorgas Memorial Laboratory, Panama, R. de P. 
The discovery by Dr. Vernon Lee of a new species of Lepiselaga 
in Colombia, provides the opportunity to review the taxonomy of 
the group and to make some suggestions as to the relationships of the 
species to each other, as well as to other genera usually considered 
to be related. 
Lutz (1913) erected the subfamily Lepidoselaginae to contain 
Lepiselaga , Selasoma , Himantostylus, and Stigmatophthalmus , the 
last two described as new. Lutz accepted Osten Sacken’s invalid 
emendation of Lepiselaga to Lepidoselaga , but used both inter- 
changeably in this publication. He also stated that the subfamily 
would contain other unnamed Australian and African species. Ender- 
lein (1925) retained the group as a tribe Lepiselagini for 9 more or 
less unrelated genera, but including Lepiselaga and Himantostylus , 
though not Selasoma or Stigmatophthalmus , which were placed in 
the tribes T'abanini and Dichelacerini respectively. Krober (1934) 
included Lepiselaga and Selasoma in the subfamily Lepiselaginae, but 
placed Himantostylus in the Stenotabaninae and relegated Stigma- 
tophthalmus to the position of a subgenus of Dicladocera in the sub- 
family Tabanini. Fairchild (1942) placed Lepiselaga and Selasoma 
in Tabaninae , tribe Lepiselagini. Finally Mackerras (1955) included 
all the Neotropical Tabaninae with bare basicosta in one tribe, 
Diachlorini. 
As presently known, Selasoma, Stigmatophthalmus and Himanto- 
stylus are monotypic, each containing but a single rather aberrant 
species, and will be discussed first. 
Selasoma Macquart 
1838, Dipt. Exot. 1(2): 187. Type Tahanus tibialis Fab. 
Krober (1934) included also T. nigrocoeruleum Rond. 1850 and 
5 . giganteum Lutz 1913. The latter is a species of Stibasoma, as 
noted earlier (Fairchild 1961), while recent examination of the type 
of nigrocoeruleum in Naples shows it to be the same as Dicladocera 
acheronitens Krbb. 1931 (New synonymy). S. tibiale has a wide 
range in the Neotropics, being recorded from Oaxaca, Mexico to 
southern Brasil, but seems everywhere uncommon and local. 
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